Connection apparatus for the wires of head receivers for broadcasting



o. ZAHN 1,755,75

CONNECTION APPARATUS FOR THE WIRES OF HEAD RECEIVERS FOR BROADCASTING April 22, 1930.

Filed Dec. 1, 1928 lnven for:

fff/MW? Patented Apr. 22, 1930 UNITED STATES PATENT, oFFieE OTTO ZAI-IN, F HANAU-ON-THE-MAIN, GERMANY CONNECTION APPARATUS FOR THE WIRES HEAD RECEIVERS FOR BROADCASTING 7 Application filed December 1, 1928, Serial No. 323,157, and in Germany June 21, 1928.

This invention relates to a connection apparatus for the wires of head receivers for broadcasting designed to permit dancing to broadcasted dancing music when there is no loud speaker or when a loud speaker is not Fig. 2 is a perspectlve View showing the apparatus used by two people dancing.

The apparatus consists of a box a of insulatlng material comprising two sleeves for said ball-shaped head so that it can rotate around the same adapted to receive a con- I tact plug from the head receivers, a metal sleeve on said insulation sleeve connected to the second contact sleeve of said box, a collar on said metal sleeve, a metal frame loosely resting on said collar, a ring attached'to said frame, and a contact sleeve suspended on said ring designed to receive a contact plug of the other wires of the head receivers.

In testimony whereof I aflix my signature.

OTTO ZAHN.

0 of said pin,a plug sleeve loosely mounted on connecting to a receiving apparatus. From this box a projects in downward direction a sleeve 0 in insulating material in which a bolt (Z is mounted which is connected to one of the'sleeves b. On'the ball-shaped lower end of bolt 03 a sleeve e is loosely mounted so that it can rotate around saidball-shaped end. This sleeve cl is designedto receive a contact plug f for the receiver-wires g. The second contact plug-hot the receiver-wires is insertedinto a sleeve is suspended on a ring The ring 6 is attached to a frame m, loosely resting on the collar n of ametal sleeve 0. This metal sleeve 0 is pushedover the sleeve 1 c of insulation material and connected to the second contact sleeve b 7 I Owing to this fixation the wires 9 to-the ends of which headreceivers are attached, cannot be twisted together when the persons wearing the head receivers are dancing. 5 Fig. 2 shows how the apparatus is used.

In order to prevent short-circuit the ends of the wires g are of difi'erent'lengthso that the pressure screws in the'contact plugs can" not touch each other.

.Iclaim: An apparatusforconnecting to the main line the wires of head receivers vfor broadcasting,compri sing' in combination abox, two contact sleeves in said box adapted to-be 5 connectedto the main line, a sleeve of insu- I lating material downwardly projecting from said box, a metal pin in said insulation sleeve connected to one of said contact sleeves in said box, a ball-shaped head onthe lower end 

